Microgravity reshapes bacteriophage–host coevolution aboard the International Space Station

Bacteriophage-host interactions are crucial in shaping microbial ecosystems on Earth. However, their behavior in microgravity remains unexplored. This lack of understanding can have significant implications for our understanding of microbial communities and their role in various ecosystems.

To address this challenge, researchers conducted an experiment aboard the International Space Station (ISS). They studied the dynamics between T7 bacteriophage and Escherichia coli in microgravity. This study allowed them to investigate how microgravity affects phage-host interactions.

The researchers discovered that phage activity was initially delayed in microgravity but ultimately successful. They also found de novo mutations in both phage and bacteria that enhanced fitness in microgravity. This suggests that microgravity can drive the evolution of new traits in phages and bacteria.

The study revealed striking differences in the number, position, and mutational preferences between terrestrial and microgravity conditions. This suggests that microgravity can shape the evolution of phages and bacteria in unique ways.

This research has significant implications for our understanding of microbial communities and their role in various ecosystems. It also highlights the importance of studying microgravity effects on phage-host interactions. Future studies can build on this foundation to explore the terrestrial benefits of this research.